<!doctype html>
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<head>
	<meta charset="UTF-8">
	<title>JavaScript-Garden</title>
	<script src="javascript-garden.js"></script>
</head>
<body>
	<button type="button" id="btn1">버튼1</button>
	<button type="button" id="btn2">버튼2</button>
	<button type="button" id="btn3">버튼3</button>
	<button type="button" id="btn4">버튼4</button>
	<button type="button" id="btn5">버튼5</button>
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